Formulas geometry

Formulas for Geometry Mr. Ryan Visit www.worldofteaching.com for more free powerpoints

Don’t Get Scared!!! ,[object Object]

Perimeter ,[object Object],8 8 8 8+8+8=24 The Perimeter is 24

Perimeter ,[object Object],12 12 12 12 12+12+12+12=48

Perimeter ,[object Object],[object Object]

Remember ,[object Object],[object Object],[object Object]

The Same!! ,[object Object],15

Square/Rectangle Formula ,[object Object],[object Object],[object Object],[object Object],14 25 20

Other shapes ,[object Object],10 8 sides, each side 10 so 10+10+10+10+10+10+10+10=80

Odd shapes ,[object Object],[object Object],25 15 5 25+25=50 (for Length) 15+5+15+5=40 (for Width) Perimeter=90

Area ,[object Object],[object Object]

AREA ,[object Object],2 units (ft, in, m) 2 3 4 1

Area of Squares/Rectangles ,[object Object],2 Length(2) xWidth(2) = 4 square units

Parallelogram Area ,[object Object]

Parallelogram Area ,[object Object],[object Object],BASE (length) Height (width) 8 5 Base 8 x Height 5 = Area 40 The diagonal line is NOT the height!!!

REAL formula for area of squares ,[object Object],[object Object],Side one Side two

Different Names/Same idea ,[object Object],[object Object],[object Object]

Area of a Triangle ,[object Object],[object Object],Base Height Height Base 8 5 ½ Base x Height = Area ½ (8) x 5 = Area 4 x 5 = 20

Area of a Circle ,[object Object],[object Object],[object Object]

Circumference of a Circle ,[object Object],[object Object],[object Object],[object Object],If the radius is 5, then the diameter is 10

Area of a circle ,[object Object],[object Object],Radius 5 Area=3.14 x (5 x 5) Perimeter = 3.14 x 10

You’re Done ,[object Object],[object Object],[object Object]

Formulas geometry

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Formulas geometry